Differentially-geared speed-changing mechanism.



E. I. & E. P. REMY & A. BERGER.

DIFFBRBNTIALLY GEABED SPEED GHANGING MBOHANISM. APPLIoATIoN FILED DEO. 9, 1912.

` the differential' UNITED STATES' PATENT oEEroE.

FRANK I. REMY,`BENJAMIN P. REMYAN ARTHUR BERGER, F ANDERSON, INDIANA, ASSIGNORS TO- REMY BROTHERSCOMP-ANY, OF ANDERSON, INDIANA, A COPART- N ERSHIP.

DIFFERENTIALLY-GEARED SPEED-CHANGING MECHAN ISM.

To all whom t may concern.'

Be it known that we, FRANK-I. REMY, BENJAMIN P. REMY, and ARTHURBERGER, citizens of theUnited States,.and residents of Anderson, county of Madison, and State of Indiana, have invented a certain new and useful 'Difi'erentially-Geared Speed-Changmay be controlled, a sdesired,vthat is, mav. be b oth? driven` at the same speed or the speed ofeither of said shafts increased and the other correspondingly decreased.

The invention has been made with particular reference t0 means for driving va traction engine, automobile or other power vehicle so as to control the speed of the same when going straight ahead and for turning or steering t e same `through the drive wheels. v 4

The chief feature of the invention .consists in providing constantly running differential gear mechanism at the junctureof the two shafts for actuating the two shafts and also provide additional means for driving each shaft, and means for controlling the speed of said' additional the speed of either shaft may and the other correspondingly decreased and will continue to actuate said shafts and take up all ofthe diferentiations in movement. or travel of the shafts. v

The nature of the invention will be understood from the accompanying drawings and the following description and claims.

In the drawings, Figure `l is a horizontal central section throu h the device showing the shafts partially roken away and the mechanism arranged for driving the two shafts at substantially the same speed. Fig. 2 is avertical section through the same on the line 2-2 of Fig. 1.. -F1g. 3 is a view similar to Fig.' 1, but with th arts altered in position so as to drive the shafts at different speeds, parts 'being broken. away.`

There is shown herein a suitablehous or frame in which the power transmitting Specification of Letters Patent.

Application leai4 December 9, 1912. Serial No.

Patented Mar. 17,1914. 735,740.

mechanism is mounted. There are shown -two shafts 11 and 12 in alinement with each other, which shafts, in the case of tractors or A othe'i` vehicles,propel the drive eels thereof. Atl t e juncture of the sha 'i i usual differential gearing 13 in `-a' housing 14 which is ri 'dly secured to a' gear 15 which is mounts loosely by a hub 16 on the shaftd'l and is driven by a beveled gear 17 on the driving shaft 18 which is actuated by the engine, not shown. Therefore, the differential gearing is constantly runnlng at the same speed.

T e foregoing mechanism may be conof the shafts or, if desired, providing an additional coperative drivmg means therefor there is shown herein a pair of gears mounted on the opposite sides of the shaft 8 1n a bearing 22 in position to be Isimultaneously engaged means so that.A

be mcreased ably mounted and mounted inthe frame. shafts 29 has a beveled to which drives a gear the shafts 11 and 12. each of said shafts.

The driven friction disks 28 are slidable on the shafts 29 by the arms 35 and a sliding rod 36. The arm projects into a groove 37 on the hub 38 of the driven fricthe rods 36 are recipro- And each of the gear 30 secured there- 31 secured on one' of here is a gear 31 on of arms 42 which are secured to the outer -ends of the shifting rods 36. One of the rods 36 is longer than the.. other so that the friction disks 28 w' l always be maintained thereby on opposite sides of the centers of the `driving friction disks27.

l`When the driven friction disks 28 are adjusted to positions equidistant from the centers' of the driving disk 27, as shown in Fie. 1, they will drive the shafts 11 and .12 at the same speed. But if the outer end of the lever is moved inward, it will cause the right-hand disk 28 to move away from'the mounted in alinement with each other, a driving shaft, a differential gearing actuated by the driving shaft for driving said driven shafts, a pair of friction disks' driven by said driving shaft, driven by 'and operated at right angles to each driving friction disk, a shaft on which each driven friction disk is slidably mounted, means for transmitting power from each friction driven shaft to one of said main driven shafts, and means for simultaneously moving said friction disks toward or from the centers of their respective driving friction disks.

6. A frame, a -vpair of main driven shafts mounted in alinement with each other, a driving shaft, a dierential gearing actuated by the driving shaft for driving said driven shafts, a vpair of friction disks driven by said driving shaft, a driven friction disk 'driven by and operated at right anglesto each driving friction disk, ashaft on which center of its driving disk 27 and thereby the speeds of the shafts 11 and 12 will be varied, the shaft 12 operating faster than the shaft 11. If, however, the lever 40 be moved outward and the disk 28 be shifted in the other direction, the shaft 11 will be driven faster than the shaft 12. By proper operation of the lever 40, therefore, any desired difference inthe speeds of the shafts 11 and 12 may be obtained, and the differential will take up the inequalities of the opera-tion of the shafts and will cooperate with the other driving oweitransmitting mechanism in driving the shafts.

lVe claim as our invention:

1. A pair of shafts in alinement, a dierential gear mechanism for driving the same, and additional means for frictionally driving each of said shafts arranged so as to vary the speeds of the shafts.

2. A pair of shafts in alinement, constantly driven differential gear mechanism for actuating the same, and additional means for frictionally driving each of said shafts arranged so as' to vary the speeds of the shafts.

3. A pair of shafts' in alinement with each other, differential gear mechanism for driving the same, additional means for frictionally driving each shaft, and means for controlling the said additional driving means so as to vary the speeds of said shafts.

4. A pairI of shafts in alinement with each other, differential ear mechanism for driving the same, ad itional means foi frictionally driving each shaft, a single means for actuating all of said shaft driving means and meansfor controlling said additional shaft driving means so as to vary the speeds of said shafts.

5. A frame, a pair of main driving shafts ed, means for transmitting power from each friction driven shaft to one of Said main driven shafts, means for holding the friction driven shafts on opposite sides of the centers .of their res eetive driving friction disks, and means or moving the driven friction disks so as to move them simultaneously toward or away from thecenters of their respective driving friction disks.

In witness whereof, we have hereunto affixed our signatures in the presence of the witnesses herein named.

FRANK I. REMY. BENJAMIN P. REMY. ARTHUR BERGER. Witnessesf:

H. B. POLAND, RUTH I. MILLER.V

each driven friction disk is slidably mount- 4 a driven friction disk v 

